National Checking's RegistRoll® is utilized in P.O.S. systems that verify the charges against a credit card. The restaurant keeps the original and the copy is for the customer. Two-Ply Carbonless (white/canary) RegistRoll 3.00 inches wide and 100 feet long. Inner packed 10 rolls per tray / 3 trays per case(30 rolls). Start every roll quick and easy with RegistRollSeal.